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What is the difference between exit and return? [duplicate]
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krisskriss
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7
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How do you calculate the average of a set of circular data? [closed]
...e, A, from a set of angle measurements
a[i] 0<=i
sum_i_from_1_to_N sin(a[i])
a = arctangent ---------------------------
sum_i_from_1_to_N cos(a[i])
The method given by starblue is computationally equivalent, but his reasons are clearer and probably program...
Property getters and setters
...y, in the Swift REPL:
15> var pt = Point()
pt: Point = {
_x = 0
}
16> pt.x = 10
17> pt
$R3: Point = {
_x = 20
}
18> pt.x
$R4: Int = 10
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Regular expression to match URLs in Java
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106
Try the following regex string instead. Your test was probably done in a case-sensitive manner. ...
Naming convention for unique constraint
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56
My thinking is it isn't a key: it's a constraint.
It could be used as a key of course, and uniq...
Length of generator output [duplicate]
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The easiest way is probably just sum(1 for _ in gen) where gen is your generator.
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Why should eval be avoided in Bash, and what should I use instead?
...l if you want to do something more complex:
# Add to scenario:
VAR_2='4 5 6'
# We could use:
local ref="${REF}_2"
echo "${!ref}"
# Versus the bash < 2 method, which might be simpler to those accustomed to eval:
eval "echo \"\$${REF}_2\""
Regardless, the new method is more intuitive, though i...
Get a random boolean in python?
...port random" "random.choice((True, False))"
1000000 loops, best of 3: 0.846 usec per loop
$ python -m timeit -s "import random" "random.getrandbits(1)"
1000000 loops, best of 3: 0.286 usec per loop
$ python -m timeit -s "import random" "bool(random.getrandbits(1))"
1000000 loops, best of 3: 0.441 u...
Accessing Object Memory Address
When you call the object.__repr__() method in Python you get something like this back:
9 Answers
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Create a dictionary on a list with grouping
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Dov
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answered Jun 2 '09 at 5:56
Prashant CholachaguddaPrashant Chol...